/Engine/Source/Editor/SceneOutliner/Public/SceneOutlinerPublicTypes.h
Settings for the scene outliner which can be quieried publicly
struct FSharedSceneOutlinerData
bool:  1
bOnlyShowFolders
True to only show folders in this outliner
bool:  1
bShowParentTree
Whether the Scene Outliner should display parent actors in a Tree
bool:  1
bShowTransient
Show transient objects
TMap<FName,FS...
ColumnMap
Map of column types available to the scene outliner, along with default ordering
FCustomSceneOut...
CustomDelete
Invoked whenever the user attempts to delete an actor from within a Scene Outliner in the actor browsing mode
FSceneOutlinerM...
ModifyContextMenu
Modify context menu before display